It's everyones favoriate weapon because it offers the best support a mesmer can get. Choas storm + leap = chaos armor = boons + regular chaos armor = more boons.I don't 'get' staff, which seems to be a lot of people's favored secondary weapon. I ended up using GS & scepter + focus. (Scepter for range + #3 seems to do decent enough dps, focus for speed boost + warden.) Basically unless warden and berserker are up I feel like I contribute little dps to any given fight. GS2 seems to be mandatory to keep up or GS dps feels terrible.
Scepter is a joke and the only thing it's useful for is attack 3 which is highly lackluster in PvE to begin with. Focus is a reflect weapon, you trait it, it reflects projectiles. Warden is bugged and doesn't give the proper attack reset time with phantasmal haste and it being stationary doesn't help its damage.
Izerker has been bugged for 2 months now and is no where getting its previous damage back any time soon.
The only thing you can do is run a power shatter build if you want damage and that is getting nerfed soon.
---------- Post added 2012-12-22 at 04:48 PM ----------
There is a thread about a theif complaining about the amount of damage a mesmer can do. Here is the video
Anyone else notice the mesmer almost got one shot? And the glass cannon theif who almost one shot him complained that he got bursted down.
Incase anyone was noticiging the damage is Iwarlock + mind wrack crit on a glass cannon theif with 13k hp.